FOREWORD
The reader who is willing to give the following pages a careful reading, and a courteous hearing, is entitled to know the basis of study, observation or experience from which the suggestions, inferences and conclusions proceed, in order that he may fairly estimate their value.
At the age of seventy-two, my egotism is at least softened by the discovery of the many things I do not know; and my dogmatism, so far as it ever existed, is...
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